Feed-water heater.



J. W. GURRIE. FEED WATER HEATER. APPLIOATION FILED AUG. 27, 1908.RENEWED JULY 30, 1902.

I 934,393, Patented Sept, 14. 190E.

2 SHEETS-SEEET 1.

Jam wfizle J. W. GURRIE.

FEED WATER HEATER. APPLICATION FILED AUG.27, 190s. RENEWED JULY30,1909.

Patented Sept. 14. 1909.

2 SHEETS-SHEET 2.

ii- L5- fir- LE:

uarantor Jam WT Lurm'e citizen of the United .States,

UNITED STATES FATENT OFFICE.

JOHN WILLIAM. CURRIE, F MINNEAPOLIS, MINliiTESOTA.

' FEED-WATER HEATER.

Specification of Letters Patent. Patented Sept. 14, 1909.

Application filed August 27, 1908, eria1Na 450,535. Renewed July 30,'1909. Serial No. 510,368.

To all whom it may concern:

Be it known that I, JonN W. OURRIE, a residing at Minneapolis, in thecounty of Hennepin and State of Minnesota, have invented certain new anduseful Improvements in Feed- Water Heaters, of which the following aspecification. I

This invention relates to steam boilers, and more particularly tolocomotive boilers, and has for its object to provide a feed. waterheating apparatus for locomotive boilers, which will be so constructedthat it may be located within the smoke box of a locomo tive, forward ofthe boiler itself, and which will be so arranged as to enhance the heating of the water before it enters into the boiler.

Another object is to provide a structure which may be easily inserted orremoved and which will be relatively simple to regulate.

Other objects and advantages will be apparent from the followingdescription, and it will be understood that changes in. the specificstructure shown and described may be made within the scope of theclaims, without departing from the spiritof the inven tion.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure l is a longitudinal section of a locomotive boiler, the presentheating apparatus being shown in side elevation, Fig. 2 is a section online 2'2.of Fig. 1, showing the arrangement of the tube banks, Fig.3 isa vertical section through the heat ing tank, Fig. 4 is a perspectiveview of one of the tube banks, Fig. 5 is a detail section showing theconnection of the exhaust with the heating tank.

Referring to the drawings, there is shown a locomotive boiler 5,forwardly of which there is located the usual smoke box 6 with which thesmoke stack 7 of the locomotive communicates.

\Vithin the smoke box, at each side thereof, there is located a bank ofwater tubes 8, these banks being curved vertically as shown, and eachconsisting of a pair of spaced head plates 9, in which are engaged theends of curved water tubes 10, the convex faces of which are directedoutwardly. Bolted to' each head plate, there is a dome 11, hollow aswill be understood, and with which the tubes 10 communicate; An injcctor or other indicated at 12, andcommunicates wit-h a pipe 13, whichis connected With the rearward end of the lower dome A of one of thetube banks 8. A pipe 14 is connected with the pipe 13 by means of a tee15, and communicates with the corresponding lower dome B of the othertube bank. Forwardly of the two banks 8 there is located within thesmoke box 3, a circular, vertically extending steam receiving tank 15,having a second water tank 16 therewithin. A rality of tubes 17 extendhorizontally through the tank 16, communicating with the interior of thetank 15, and thus receiving steam which has been admitted to the tank15.

A steam pipe iii-communicates with the tank'lo and with the boiler forthe passage of steam to the tank. and a circulating pipe 19 alsocommunicates with the boiler with the bottom of the tank-15.

Pipes :20 connnim-icate with the forward ends of the upper domes 11 ofthe two tube banks 8, and extend downwardly to communicate with thelower portion of the tank feeding apparatus is and j 16. This tank isprovided with a washout valve 21 andthe steam tank 15 is provided with adrain cock 22. The lower domes A and ll of the tube bank are alsoprovided with washout cocks, indicated M23.

The exhaust pipe from the cylinders of the 1 engine is indicated at 24,and a pipe 26 communicates with the exhaust pipe and with tlie'steaintank 15, this pipe having a check valve opening toward the steam tank,so that when live steam has been cut off from the boiler, by means ofvalves C located in the pipes 18 and 19,. the-exhaust from the cylinderwill pass through the check 25, and by means of the tank, thus acting toheat the water in the tank 15.

The water pipe 28 communicates with-the upper portion of the tank 16 andwith the boiler.

It will be'observed,,water being fed to the lower domes A and B of thebanks 8, will, as the water is heated, rise through'the tubes 10 to 'theupper domes, and will then,

by thermal circulation pass downwardly through the pipes 20 to the lowerportion of the tank 16 where'it will be further heated pipe '26 throughthe steam- 'gitudinally curved pipes engaged at their ends in the headplates, and hollow domes secured upon the head plates, said pipescommunicating with the interiors of the domes, a water feedingmechanism, branch pipes communicating with the feeding mechanism andwith the lower domes of the two tube banks, a steam tank located withinthe smoke box forwardly of: the banks, steam circulating pipescommunicating with the steam tank and with the boiler, a water tanklocated within the'steam tank, a plurality of tubes extendinghorizontally through the water tank and connnmiicating with the steamtank, and a water pipe communicatii'ig with the water tank and with theboiler.

2. The combination with a locomotive, of a pair ot' tube banks locatedwithin the smoke box forwardly of the boiler, said tube banks eachconsisting of a plurality of longitudinally curved pipes, domesconnected with the ends of the pipes of each bank, a water feedingmechanism, branch pipes communicating with the feeding mechanismand.with the lower domes of the tube banks, a steam tank located withinthe smoke box forwardly of'the banks,- steam circulating pipescommunicating with the tank and with the boiler, a water tank locatedwithin the steam tank, a plurality of tubes extending hori zontallythrough the water tank and coinmunicating with the steam tank, pipescommunicating with the upper dome and with the water tank, and a Waterpipe COlfllTlllllleating with the water tank and with. the boiler.

3. The combination with a locomotive, of a pair of tube banks locatedwithin the smoke box forwardly of the boiler, said tube banks eachconsisting of a plurality of longitudinally curved pipes, domesconnected with the ends of the pipes of each bank, a water feedingmechanism, branch pipes communicating with the feeding mechanism andwith the lower domes of the tube banks, a tank located within the smokebox forwardly of the banks, a tank located within the first named tank,a plurality of tubes extending through the second named tank' andcommunicating with the first named tank, steam circulating pipescommunicating with one of said tanks and with the boiler, water pipescommunicating with the other of said tanks and with the tube banks, anda water pipe communication with the just mentioned tank and with theboiler.

' l. The combination with a locomotive, of a pair of tube banks locatedwithin the smoke box' forwardly of the boiler, said tube banks eachconsisting at a plurality of longitudinally curved pipes, domesconnected with the .ends of the longitudinally curved pipes of eachbank, a water feeding mechanism, branch pipes communicating with thefeeding mechanism and with the lower domes-of the tube banks, a tanklocated within the smoke box forwardly of the banks, atank locatedwithin the first named tank, a plurality of tubes extending through thesecond named tank and communicating with the first named tank, steamcirculating pipes communicating with one of the said tanks and with theboiler, a valve in each of said steam circulating pipes operable to cutoff the circulation of steam therethrough, Watercirculating pipescommunicating with the other of said tanks, certain of said watercirculating pipes communicating with the tube banks, and certain of saidwater circulating pipes communicating with the boiler, an engine exhaustpipe, and check valve connections between the exhaust pipe tank withwhich. the steam circulating pipes communicate.

ln testimony whereof I atiix my signature, in presence of two witnesses.

JOHN 'WILLTAM CURE/ll). l'Vit'nesses:

L. G. -Hum/inmuon','

W. I. RA'FTER.

and the

